The author mentions "wispy marks" in line 19 as an example of（）
A: an aspect of the lunar surface discovered through lunar missions
B: a characteristic of large craters
C: a discovery made through the use of Earth-based telescopes
D: features that astronomers observed to be common to Earth and the Moon
A: an aspect of the lunar surface discovered through lunar missions
B: a characteristic of large craters
C: a discovery made through the use of Earth-based telescopes
D: features that astronomers observed to be common to Earth and the Moon
举一反三
- _____ is covered with heavy snow. A: The earth’s surface B: The surface of earth C: The surface earth D: The earth surface
- Lunar Calendar is based on the movement and cycles of the moon, which represents a linear concept of time.
- ______ is covered with heavy snow. A: The surface of earth B: The earth’s surface C: The earths’ surface D: The surface
- It is possible to use satellites to predict earthquakes because satellites ________. A: take pictures of the Earth B: catch radio waves sent from the Earth’s surface C: are sensitive to Earth’s movements D: see almost the entire Earth
- The earth _______ round the sun, and the moon _________ round the earth